Single-Phase Voltage Drop Calculator
NEC Chapter 9 R+X drop with AWG picker, conduit reactance, parallel sets and 3% verdict. 9 inputs, 5 outputs with grouped results.
Result
Voltage at load
Waiting for calculation.
Voltage drop
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Drop percent
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Over limit (1 = upsize)
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Copper loss
Waiting for calculation.
Formula
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NEC Table 8 resistance drop for 24V DC control runs with gauge picker, material and limit verdict. 9 inputs, 5 outputs with grouped results.
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EGC size from the upstream OCPD per NEC Table 250.122, copper or aluminum. 3 inputs, 2 outputs with grouped results.
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GEC copper size from the service conductor per NEC Table 250.66. 1 input, 1 output.
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Bonding jumper size per NEC 250.28(D)(1) for service equipment. 1 input, 1 output.
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